参数资料
型号: SCC2692AE1B44,557
厂商: NXP Semiconductors
文件页数: 14/30页
文件大小: 0K
描述: IC UART DUAL W/FIFO 44PLCC
标准包装: 480
特点: 故障启动位检测
通道数: 2,DUART
FIFO's: 3 位
电源电压: 5V
带并行端口:
带自动流量控制功能:
带故障启动位检测功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 44-QFP
供应商设备封装: 44-PQFP(10x10)
包装: 托盘
其它名称: 935262497557
SCC2692AE1B44
SCC2692AE1B44-ND
Philips Semiconductors
Product specification
SCC2692
Dual asynchronous receiver/transmitter (DUART)
1998 Sep 04
21
NOTES:
1.
INTRN or OP3-OP7 when used as interrupt outputs.
2.
The test for open-drain outputs is intended to guarantee switching of the output transistor. Measurement of this response is referenced from the midpoint of the switching
signal, VM, to a point 0.5V above VOL. This point represents noise margin that assures true switching has occurred. Beyond this level, the effects of external circuitry and
test environment are pronounced and can greatly affect the resultant measurement.
VM
VOL +0.5V
VOL
WRN
INTERRUPT1
OUTPUT
tIR
VM
VOL +0.5V
VOL
RDN
INTERRUPT1
OUTPUT
tIR
SD00136
Figure 6. Interrupt Timing
X1/CLK
CTCLK
RxC
TxC
tCLK
tCTC
tRx
tTx
tCLK
tCTC
tRx
tTx
+5V
1K
X1
X2
C1 = C2 = 24pF FOR CL = 20PF
X1
X2
3.6864MHz
3pF
4pF
50 TO
150 K
TO INTERNAL CLOCK DRIVERS
SCC2698B
NOTE:
C1 AND C2 SHOULD BE BASED ON MANUFACTURER’S SPECIFICATION. PARASITIC CAPACITANCE SHOULD
BE INCLUDED WITH C1 AND C2. R1 IS ONLY REQUIRED IF U1 WILL NOT DRIVE TO X1 INPUT LEVELS
TYPICAL CRYSTAL SPECIFICATION
FREQUENCY:
2 – 4MHZ
LOAD CAPACITANCE (CL):
12 – 32pF
TYPE OF OPERATION:
PARALLEL RESONANT, FUNDAMENTAL MODE
NC
R1
U1
SD00137
RESISTOR REQUIRED
WHEN U1 IS A TTL DEVICE
Figure 7. Clock Timing
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